<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .quan1 {
            width: 150px;
            height: 150px;
            display: flex;
            justify-content: center;
            align-items: center;
            border: 1px solid;
        }

        .one1 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
        }

        .quan2 {
            width: 150px;
            height: 150px;
            display: flex;
            justify-content: space-evenly;
            align-items: center;
            border: 1px solid;
        }

        .one2 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
        }

        .two2 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
        }

        .quan3 {
            width: 150px;
            height: 150px;
            display: flex;
            justify-content: space-between;

            border: 1px solid;
        }

        .one3 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
        }

        .two3 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
            align-self: center;
        }

        .three3 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
            align-self: flex-end;
        }

        .quan4 {
            width: 150px;
            height: 150px;
            display: flex;
            flex-wrap: wrap;
            align-content: space-between;
            border: 1px solid;
        }

        .one4 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
        }

        .two4 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;

        }

        .three4 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;

        }

        .four4 {
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;

        }
        .row{
            display: flex;
            flex-basis: 100%;
            justify-content: space-between;
        }
        .five5{
            width: 20px;
            height: 20px;
            background-color: black;
            border-radius: 50%;
            position: relative;
            left: 60px;
        }
    </style>
</head>

<body>
    <!-- 第一种 -->
    <div class="quan1">
        <div class="one1"></div>
    </div>
    <div class="quan2">
        <div class="one2"></div>
        <div class="two2"></div>
    </div>
    <div class="quan3">
        <div class="one3"></div>
        <div class="two3"></div>
        <div class="three3"></div>
    </div>
    <div class="quan4">
        <div class="row">
            <div class="one4"></div>
            <div class="two4"></div>
        </div>
        <div class="row">
            <div class="three4"></div>
            <div class="four4"></div>
        </div>
    </div>
    <div class="quan4">
        <div class="row">
            <div class="one4"></div>
            <div class="two4"></div>
        </div>
        <div  class="fvv">
            <div class="five5"></div>
        </div>
        <div class="row">
            <div class="three4"></div>
            <div class="four4"></div>
        </div>
    </div>
    <div class="quan4">
        <div class="row">
            <div class="one4"></div>
            <div class="two4"></div>
        </div>
        <div class="row">
            <div class="three4"></div>
            <div class="four4"></div>
        </div>
        <div class="row">
            <div class="three4"></div>
            <div class="four4"></div>
        </div>
    </div>
</body>

</html>